diff --git a/lib/src/string_extensions.dart b/lib/src/string_extensions.dart
index c38c424..7f4d63d 100644
--- a/lib/src/string_extensions.dart
+++ b/lib/src/string_extensions.dart
@@ -17,13 +17,13 @@ extension StringExtensions on String {
     return (length > 1) ? this[0].toUpperCase() + substring(1) : toUpperCase();
   }
 
-    /// Convert CamelCase to a capitalized space separated title.
+  /// Convert CamelCase to a capitalized space separated title.
   String camelCaseToTitle(String input) {
-    final spaced = input.replaceAllMapped(
+    final String spaced = input.replaceAllMapped(
       RegExp(r'([a-z])([A-Z])'),
-      (match) => '${match.group(1)} ${match.group(2)}',
+      (Match match) => '${match.group(1)} ${match.group(2)}',
     );
 
-    return spaced.split(' ').map((word) => word[0].toUpperCase() + word.substring(1)).join(' ');
+    return spaced.split(' ').map((String word) => word[0].toUpperCase() + word.substring(1)).join(' ');
   }
 }